What I bolded, is that MoH is calling this. They are the experts. Jacinda is the mouthpiece. No doubt the Govt, not MoH will consider relationships with other countries, but I would expect that's a secondary call. She implied US and/or Europe will be restricted. Europe you can guarantee.
I agree they are the people to listen to, but it is wrong to assume just because they are making decisions that they are timely and the right ones. Look at the Melbourne GP - pandemic declared, a whole day of on-track action, race not actually cancelled until two hours after the fans were meant to go in and were standing in queues at the gate.
The GP, well its Australia, they dont seem to have a handle on the virus. ScoMo allowed free access to anyone from Italy, until the F1 people got here then he closed it. Thats poor, and thats why Oz isn't doing well. Sport seems alive and well, unlike the rest of the globe.